The largest of Chrome's laptop backpacks. Citadel is made for those weekend adventure trips where laptops are required. The 100% welded-waterproof main compartment can be used to haul ice cold beer or keep your clothes dry. The padded laptop compartment has a large zip-around PU water-resistant zipper. Inside pockets secure mouse, folders, and notebooks. The Citadel is business in front, party in the back.